I'll have to go look for more info on the headers but what I remember they are just rear dump shorty stainless ones from ebay. For the money I was pretty happy with them, I have a set of Hooker center bump block huggeers for my off road buggy that were over $100 more and are not as nice.
The clutch master cylinder is a Tilton 75 series master cylinder, the push rod is one a made from a heim joint and a threaded link made by a local company called Rod End Supply. I just drilled a hole in a stock clutch pedal to mount the rod and then made an adjustable stop that contacts the stock clutch pedal arm.
As for the motor height I'm running a GM F Body pan that is 2.7" shorter than a truck pan and mine (it's actually my son's truck) is about 1/2" about the cross member so I'd bet our motors are about the same height for the looks of things. My crank pulley is 1" above the stock sway bar. The bottom of the trans is 1" above the bottom of the frame rails. The heater hose outlets are 1" above the frame rail. I wanted things to sit where I wanted things to sit and it was easier for me to put the drive train together with headers on the motor and set it where it all fit and then make the mounts. Hind sight being 20/20 it would have been much faster and I think easier to buy mostly bolt on parts that someone else figured out already but this is a project with my teenage son so we were trying to keep costs down and for him to learn for fabrication skills. Also his truck sits pretty low and him being a teenage driver I wanted the vital parts somewhat protected. I'll get some pics added tomorrow when I get to my PC with all the pics on it.
My build thread
http://67-72chevytrucks.com/vboard/s...d.php?t=675835